You might want to make your tweens sit down before you spring this news on them. ABC is bringing High School Musical to its summer reality lineup.

Premiering Sunday, July 20th at 8:00 PM (ET), High School Musical: Summer Session will give contestants an “opportunity of a lifetime,” as they compete in a special casting for the show.

Casting scouts are eager to meet talented hopefuls, ages 16 – 22, who would like to audition for the show. Finalists will participate in a summer music program aimed at fine-tuning their musical skills.

Mum’s the word on the final grand prize, but rumor is it’s WAY worth it and will go to the finalist still left standing after eliminations.

High School Musical: Summer Sessionpremieres on Sunday, July 20th, and will air Sunday and Monday nights at 8:00PM (ET)for three weeks, and then continue on Mondays at 8:00PM (ET)through the end of the summer.